Google loses Shazeer to OpenAI and Jumper to Anthropic as talent wars hit 'celebrity era'

The week's defining storyline wasn't a model launch—it was AI lab musical chairs, with Google hit hardest. Noam Shazeer, co-author of the pivotal 2017 'Attention Is All You Need' paper that introduced the transformer (the 'T' in ChatGPT), announced he is leaving Google DeepMind for OpenAI. Google had previously paid more than $2 billion to acqui-hire Shazeer and part of his Character.ai team. Two days later, John Jumper, who shared the 2024 Nobel Prize in Chemistry for AlphaFold, said he is leaving DeepMind for Anthropic, with a one-year garden leave per Business Insider sources.

The moves come a month after OpenAI cofounder Andrej Karpathy joined Anthropic's pretraining team. Axios notes the broader churn: Barret Zoph rejoined OpenAI then departed again, and NVIDIA acqui-hired the Essential AI team including transformer co-author Ashish Vaswani. Business Insider frames it as the talent wars' 'celebrity era'—labs competing not just for talent but for marquee names as a signal of AI supremacy.

The market reaction was sharp: the departures contributed to Alphabet's worst trading day in a year, even as DeepMind chief Demis Hassabis insisted Google is still winning AI talent overall. The big-picture irony, as Axios puts it, is that even while companies race to automate AI research itself, they're placing extraordinary value on a tiny number of humans who know how to direct that work—and one or two key hires can spur further hiring cascades.

What to watch: whether the exits dent Gemini's roadmap momentum, and how garden-leave clauses delay Jumper's impact at Anthropic. Developer sentiment on the exodus questioned DeepMind's retention strategy in an era where superstar researchers can move markets.